GPIB USB HS time out error with Keithley 2400 SourceMeter

[ecate']

I am new to LabView 2010 and having trouble connecting a Keithley 2400 SourceMeter to the demo VIs from Keithley. I am using a NI GPIB USB HS to connect the source meter, but I also have access to rs232 and a Keithley KUSB-488. So far I have been able to ID the device through MAX and VISA's test panel (using rs232), but have not been able to communicate with the device through GPIB. A timeout error occurs using either the GPIB-VISA VI or throught the VISA test panel. I am looking to read the voltage coming from the source meter.

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[Albert.Geven]

If you have installed the Keithley and the NI gpib software you probably have a problem.

If you use the NI usb gpib de-install teh keithley drivers and for the k2400 series download the driver package from NI instrument driver net.

I'm talking about two drivers but in essence the low level driver is VISA, best from NI and the instrument driver on top of that layer is the LabVIEW instrument driver that packages the special commands to the instrument into a higher level language.

[Dennis_Knutson]

So far, none of your problems are related to LabVIEW at all. You've left out some critical information. Is the instrument detected in MAX when you do a scan for instruments? If it is, what command are you sending? I also agree with Albert that you need to make sure there is not a trace of Keithley software on your system.